最终var更改值JAVA

我不明白为什么我将身高和体重初始化为32,在Window()中也可以,但在内部类GamePanel中,它的值为1和2,顺便说一句,Window()中的比例为20

public class Window extends JFrame {
    private final int SCALE;
    private final int WIDTH;
    private final int HEIGHT;

    public Window()
    {
        super("Snake");
        SCALE=20;
        WIDTH=32;
        HEIGHT=32;
        setSize(new Dimension(SCALE*WIDTH,SCALE*HEIGHT));
        setLocation(getWidth()/2,0);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        GamePanel gamePanel = new GamePanel();
        setContentPane(gamePanel);
        setVisible(true);
    }

    private class GamePanel extends JPanel {

        @Override
        public void paint(Graphics g) {
            g.setColor(Color.BLACK);
            g.fillRect(0,0,getWidth(),getHeight());
            drawGrid(g);
            System.out.println(SCALE);
            System.out.println(WIDTH);
            System.out.println(HEIGHT);
        }

        public void drawGrid(Graphics g)
        {
            //
        }

    }
}